As a huge fan of Once Upon a Time (the TV series), I can't write this review outside of the context of the bigger picture of that series. Set between seasons six and seven, the title of the book makes it very clear that it focuses on Henry and Violet. Season six wrapped up many of the storylines in the town of Storybrooke, with Henry still a teen, while season seven opened years later, exploring a now-adult Henry's relationship with Cinderella and their daughter. Clearly, at least one story remained to be told about teen Henry and his girlfriend, Violet. While the bulk of Once Upon a Time deals with the lives of characters from fairy tales, including magic and high adventure, the strength of the series to me were the very human interactions beneath all the fantasy. In that context, this book feels very much like a part of that series, even though there is almost no overt magic involved. Instead, we see a pivotal moment in Henry and Violet's lives, as they search through New York City over the course of two days for an old notebook that belonged to Violet's father. They learn about themselves, and each other, and start getting a sense of what they want from their lives and their futures.
Reading this book just a few days after the series finale of the TV series was a bit bittersweet. It was nice to spend some time with the characters from the first six seasons one last time, like Emma, Killian, and Mary Margaret, as well as young Henry and Violet. The end of this story, intentionally or not, made for a nice commentary on the end of the series as well. This was a story that was never going to be told in the actual TV series, and the details are probably not necessary to one's overall enjoyment of the series. However, as a fan who is always happy to learn more about these characters and spend some more time with them, this felt very consistent with what we've seen on the screen. To me, that is the very best sort of tie-in fiction: something that enhances my enjoyment of the overall story. I can't say if this novel would stand alone without any knowledge of the show, I don't know if that's something that a Once Upon a Time novel published during the seventh season of the show needs to do. I can say that fans of the series will enjoy spending time with these characters one last time.